| From bippy-5f407fcff5a0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2024-27019: netfilter: nf_tables: Fix potential data-race in __nft_obj_type_get() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| netfilter: nf_tables: Fix potential data-race in __nft_obj_type_get() |
| |
| nft_unregister_obj() can concurrent with __nft_obj_type_get(), |
| and there is not any protection when iterate over nf_tables_objects |
| list in __nft_obj_type_get(). Therefore, there is potential data-race |
| of nf_tables_objects list entry. |
| |
| Use list_for_each_entry_rcu() to iterate over nf_tables_objects |
| list in __nft_obj_type_get(), and use rcu_read_lock() in the caller |
| nft_obj_type_get() to protect the entire type query process. |
| |
| The Linux kernel CVE team has assigned CVE-2024-27019 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.10 with commit e50092404c1bc7aaeb0a0f4077fa6f07b073a20f and fixed in 5.10.219 with commit cade34279c2249eafe528564bd2e203e4ff15f88 |
| Issue introduced in 4.10 with commit e50092404c1bc7aaeb0a0f4077fa6f07b073a20f and fixed in 5.15.157 with commit 379bf7257bc5f2a1b1ca8514e08a871b7bf6d920 |
| Issue introduced in 4.10 with commit e50092404c1bc7aaeb0a0f4077fa6f07b073a20f and fixed in 6.1.88 with commit df7c0fb8c2b9f9cac65659332581b19682a71349 |
| Issue introduced in 4.10 with commit e50092404c1bc7aaeb0a0f4077fa6f07b073a20f and fixed in 6.6.29 with commit ad333578f736d56920e090d7db1f8dec891d815e |
| Issue introduced in 4.10 with commit e50092404c1bc7aaeb0a0f4077fa6f07b073a20f and fixed in 6.8.8 with commit 4ca946b19caf655a08d5e2266d4d5526025ebb73 |
| Issue introduced in 4.10 with commit e50092404c1bc7aaeb0a0f4077fa6f07b073a20f and fixed in 6.9 with commit d78d867dcea69c328db30df665be5be7d0148484 |
| |
| Please see https://www.kernel.org for a full list of currently supported |
| kernel versions by the kernel community. |
| |
| Unaffected versions might change over time as fixes are backported to |
| older supported kernel versions. The official CVE entry at |
| https://cve.org/CVERecord/?id=CVE-2024-27019 |
| will be updated if fixes are backported, please check that for the most |
| up to date information about this issue. |
| |
| |
| Affected files |
| ============== |
| |
| The file(s) affected by this issue are: |
| net/netfilter/nf_tables_api.c |
| |
| |
| Mitigation |
| ========== |
| |
| The Linux kernel CVE team recommends that you update to the latest |
| stable kernel version for this, and many other bugfixes. Individual |
| changes are never tested alone, but rather are part of a larger kernel |
| release. Cherry-picking individual commits is not recommended or |
| supported by the Linux kernel community at all. If however, updating to |
| the latest release is impossible, the individual changes to resolve this |
| issue can be found at these commits: |
| https://git.kernel.org/stable/c/cade34279c2249eafe528564bd2e203e4ff15f88 |
| https://git.kernel.org/stable/c/379bf7257bc5f2a1b1ca8514e08a871b7bf6d920 |
| https://git.kernel.org/stable/c/df7c0fb8c2b9f9cac65659332581b19682a71349 |
| https://git.kernel.org/stable/c/ad333578f736d56920e090d7db1f8dec891d815e |
| https://git.kernel.org/stable/c/4ca946b19caf655a08d5e2266d4d5526025ebb73 |
| https://git.kernel.org/stable/c/d78d867dcea69c328db30df665be5be7d0148484 |
